expense/app/Models/FormVehicleRunningCost.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class FormVehicleRunningCost extends Model
{
    use SoftDeletes;

    protected $table = 'form_vehicle_running_cost';

    protected $fillable = [
        'expense_number', 'user_id', 'tanggal', 'liter', 'total', 'approved_total',
        'jarak', 'tipe_bensin', 'nopol', 'keterangan', 'bukti_total', 'account_number',
        'type', 'status', 'remarks', 'approved_at', 'approved2_at', 'approved_by',
        'approved2_by', 'final_approved_at', 'final_approved_by',
    ];

    /**
     * Casts untuk otomatisasi format Carbon pada tanggal.
     */
    protected $casts = [
        'tanggal' => 'date',
        'final_approved_at' => 'datetime',
        'created_at' => 'datetime',
        'updated_at' => 'datetime',
    ];

    /**
     * Relasi ke Admin (Pengaju)
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(Admin::class, 'user_id');
    }

    /**
     * Relasi ke Attachments (Dokumen Digital)
     */
    public function attachments(): HasMany
    {
        return $this->hasMany(AttachmentForm::class, 'form_id')
            ->where('table_name', \App\Enums\AttachmentTableName::FORM_VEHICLE_RUNNING_COST);
    }

public function rejector() {
    return $this->belongsTo(User::class, 'rejected_by');
}

}